Klenkor [ˈklɛnkɔr] is a village in the administrative district of Gmina Łyse, within Ostrołęka County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) north of Łyse, 41 km (25 mi) north of Ostrołęka, and 141 km (88 mi) north of Warsaw.